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1. Class AB Amplifier with Bridge Function
2. The Length of Heat Sink: 300mm
3. Short Circuit Protection & Overtemperature Protection
4. LPF & HPF & Gain Controls for Rear Channel
5. HPF & Gain Controls for Front Channel
6. Bass Boost: 0dB/6dB/12dB
7. LPF Filter: 50Hz-250Hz
8. HPF Filter: 120Hz-3KHz
9. THD≤0.1%
10. Frequency Response: 30Hz-20KHz
11. Signal to Noise Ratio: >80dB
12. Input Sensitivity: 100mV
13. RMS Power: 4×40W@4ohm
14. Same heat sink is avaialbe for 2×40W, 2×50W, 4×50W also